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Four old friends meet. If each one shakes hands with each others,how many hand shakes are all together.?

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Four old friends meet. If each one shakes hands with each others,how many hand shakes are all together.?

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  1. 9


  2. You use the handshake formula which is n(n-1)/2, so your answer is 6.

  3. The same amount as in your other question.  You already posted this.

  4. 6shakes

  5. 3 each so 12

  6. ya its def 10, dumbfucks

  7. 6

  8. 4

  9. 3! (three factorial)= 6. Easy.

  10. It depends on how many times they shake their hand in the course of a hand shake :)

  11. 16

  12. 32, and now you explain how I came to that?
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